x402 door conformance: challenge shape probed, delivery not
· Council of AI (CSOAI Ltd)
Every door in the 14 September conformance report returned a conformant 402 challenge; every fulfillment stayed UNMEASURED.
The x402 door-conformance report generated at 2026-09-14T01:50:50Z probed the resources discovered from councilof.ai's /.well-known/x402.json and recorded each response. Every door row returned HTTP 402 and passed the same six checks: amount present, asset is USDC, network is Base, payTo matches, resource named, scheme exact. One row is a zero-priced door that settles and charges nothing. Every row records fulfillment as UNMEASURED, because the probe did not pay. The summary card is unsigned, sets not_delivery_proof, and lists fulfillment_bytes and the settlement classification as unmeasured. One defect is visible in that summary: its subject line says 9 doors, while its payload says n_doors 10 and the report carries 10 rows. The report rows are the thing to read. A conformant challenge shows that a buyer's client can parse the offer; it says nothing about what arrives after payment.
Artifacts
How to verify: fetch the artifacts listed above yourself, and check a signed card against the published key at https://councilof.ai/gspc-verify/.
Measurement, not certification. Not a grade, endorsement or legal finding.
